On a recent vacation, I had L36 versions of a Regal (LS) and GP (SE 3.8L) to drive. The Regal was probably a bit newer, with 9K miles on it versus the 24K the GP had, but overall I really liked the Buick much better. Nicer interior, nicer seats, and for some reason it seemed it had quite a bit more power and braking capabilities than the GP. The Buick had the "Gran Touring" suspension but it still handled the twisties of one of the curviest roads probably anywhere in the country very well. It also handled offroad duty (there was a sign that said "4WD ONLY" - this wasn't just driving in dirt) very well.

I think I might try to find a used Regal GS as a nice 3rd car for our household.

No offense to the GP owners. Hell, I owned a GP from '97 through '00. It was an awesome car. I just like the interior of the Buick better, and it seems more well-built than the GP.

Both cars are awesome and we all enjoy them both.